ASTROSAT CZTI

Data Quality Report

Orbit 40952

Creation date: 2024-06-27T22:22:37.475669
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_052T04_9000005582_40952cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40952cztM0_level2_quad_clean.evt
Size (bytes)297,846,72091,926,720
Size284.0 MB 87.7 MB
Events in quadrant A2,797,778633,173
Events in quadrant B2,347,940644,439
Events in quadrant C2,740,486592,940
Events in quadrant D2,738,173553,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113903
B0103252
C0111922
D0117442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513980.155672%
B513950.097295%
C5139821.595641%
D51391342.607511%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7143 5140 3 3 0.04% 0.06%
B 7143 5140 0 0 0.00% 0.00%
C 7143 5140 85 85 1.19% 1.65%
D 7143 5140 122 122 1.71% 2.37%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 495434 4075.8 595 583 121.4
A 13 254 7548 57.36 595 583 121.4
A 3 137 6311 47.17 595 583 121.4
B 0 190 21638 187.26 589 573 112.5
B 3 112 16613 142.59 589 573 112.5
B 12 111 13952 118.93 589 573 112.5
C 0 10 247553 1873.75 566 570 131.8
C 15 214 235750 1784.21 566 570 131.8
C 14 254 26238 194.73 566 570 131.8
D 13 249 421756 3080.58 565 549 136.7
D 2 249 50509 365.39 565 549 136.7
D 12 6 37577 270.81 565 549 136.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter